JP3567410B2 - Reflective illuminator with a reflector having at least one rotationally symmetric or cylindrical reflector surface - Google Patents

Abstract

The reflector (12) has a surface (11) of rotational symmetry about its axis (y) with a space (13) at the back for the light source (14), which may be a low- or high-voltage halogen lamp. Its rim (15) lies in the plane (E) of emission of light, which cannot be seen from within a screening space (R) subtending an angle ( alpha ) at the rim. Intersecting extensions (S1) of the boundary line (S) between the screening space and the cone of illumination constitute the frontal boundary (19) of the lamp space. The illuminating surface (16) is that of a diffuse-light-scattering flat element (18) on that boundary, or between it and the lamp.

Description

[0001]
[Industrial applications]
According to the present invention, a reflecting mirror having at least one rotationally symmetric or cylindrical reflecting mirror surface is divided into a front reflecting mirror area and a rear reflecting mirror area, and the rear reflecting mirror area has at least one illuminating means. forming a lighting unit accommodating space of use, it is divided by the reflecting mirror front edge the front reflection Kagamihan circumference surrounds the flat light exit surface, at least one irradiation surface will be included with the lighting means, reflected from the illuminated surface light to the mirror is emitted, within shielded space having a cross section which is defined by the extension portion facing to the free edge and the flat outer light outlet face of the shielding angle was outside the reflector, the light can not be seen, reflecting extensions crossing each other in a reflector of the free opposing sides of the extending that barrier蔽角up in the tilted by the reflector with respect to the rotation axis edge or longitudinal center plane of the mirror, the front-gu lighting means housing space At least one rotationally symmetric or cylindrical, forming a screen Morphism relating reflective lamp having a reflector with a mirror surface. Such a reflective illumination light is suitable as a ceiling-mounted illumination light.
[0002]
[Prior art]
Such a reflector lamp is known from DE 1 262 182 A1. DE-A 1,262,182 describes a dark-light technique which is grounded by Isaac Goodwood and Edison Price. This dark light, in the concept involving the model, no longer emerges from a point light source as usual before, but from an illuminated surface composed of an infinite number of individual light points. The light rays emanating from each light spot are calculated according to DE-A 1,262,182, from which the course of the curvature of the reflector can be determined.
[0003]
Features of such dark-light reflectors that apply to a rotationally symmetric light source (see FIG. 1 of DE-A-1 262 182) and a tubular elongated light source (see FIG. 2 of DE-A-1 262 182). Is that the light emitted from the illumination surface of the illumination means is not visible in the shielded space. The cross section of the shielding space is formed by the free sides of the shielding angle and the outwardly extending extensions of the flat light exit surface. A prerequisite for this is that the illumination surface of the illuminating means must be provided in a specific illuminating means receiving space. The illuminating means receiving space is in the rear area of the reflector and is defined by the extension of the free sides of the shielding angle into the reflector interior space and intersecting with each other. As described above, the shielding angle forms a shielding angle outside the reflecting mirror. The intersecting extensions of the free sides of all the shielding angles in contact with the front edge of the reflector thus form the front section screen of the illumination means receiving space. If the light reflected from the light source via the reflector surface is to be invisible in the enclosed space, the front section screen must not pass from the illumination surface of the illumination means to the light exit surface of the reflector.
[0004]
In connection with the known reflector lamps according to DE-A 1,262,182, in particular when using high-power or low-voltage halogen lamps of very high power, or in particular DE-A 2336418. Problems also arise when using compact fluorescent lamps in connection with the wall-hanging reflectors described in U.S. Pat. Such a high-power light source has at least one highly defined discontinuous surface shape, while a uniformly rotationally symmetric or uniformly cylindrical illuminated surface is required according to DE-A 1,262,182. It is.
[0005]
[Problems to be solved by the invention]
The problem underlying the present invention is to make the reflective lamps according to DE 1 262 182, in particular dark reflective lamps, largely independent of the type of lighting means used. is there.
[0006]
[Means for Solving the Problems]
According to the invention, in order to solve this problem, the illumination means forms a secondary light source, which is spaced from the illumination means in front of this secondary light source in the direction towards the light exit plane, and the front-ku screen, or between the front-ku screens and lighting means, the flat member is provided we are scattered by diffusing light, the flat member, as primary light source, toward the reflective surface It forms an irradiation surface that emits light .
[0007]
According to the invention, initially a primary light source, for example a high-voltage halogen lamp with a highly defined surface, becomes the secondary light source. This is because a separate flat member that diffuses and scatters light is regarded as the original primary illumination means.
[0008]
What is important in this case is that a separate flat member that diffuses and scatters the light, such as the well-known matte glass cap that helps protect against destruction, at an irregular location in front of the lighting means in the interior space of the reflector. Is not provided. According to the present invention, on the other hand, the absolute requirement is that the effective surface of the flat member that diffuses and scatters the light is the same as that of the member that scatters and scatters the light. Is provided in front of the interior space of the reflector.
According to the invention, the symmetry and uniformity of the discontinuous illuminating means surface area of the high-power light source is also achieved in connection with a wall-mounted reflector according to DE-A 2 336 418.
[0009]
In an embodiment of the present invention, the member that diffuses and scatters light has a grid-like light passage opening. The lattice-shaped light passage opening can be made of a member made of a transparent or opaque material and diffusing and scattering light.
[0010]
The member that diffuses and scatters light can be made of a wire mesh, and the openings of the wire mesh form a lattice-like light passage opening.
Furthermore, according to the invention, the member for diffusing and scattering the light is made of a translucent (light-transmitting) milky glassy material.
A further advantageous variant is characterized in that the flat element which diffuses and scatters the light consists of elements which form an air passage gap between them. The air passage openings, which can also be formed by such air passage gaps or light passage openings, provide air circulation which serves to cool the high-power illumination means.
[0011]
For example, in the case of a small illuminating means having a particularly demarcated surface such as a sphere or a round bar, the member which diffuses and scatters light according to the present invention is substantially rotationally symmetric. The rotationally symmetric body can be formed in a tapered, conical or frustoconical shape in accordance with the mutually intersecting extensions of the free sides of the shielding angle entering the internal space of the reflector.
On the other hand, in the case of an elongated illuminating means having a cylindrical surface, according to the invention, the member for diffusing and scattering light is formed in a substantially tank-like or basin-like shape which is closed forward (and thus relative to the light exit surface). Good to be.
[0012]
An embodiment of the invention which has proved particularly suitable for practical use is characterized in that the light-diffusing and scattering element has an air passage opening which also serves for the assembly operation.
[0013]
According to another embodiment of the present invention, for example, in a compact illuminating means having a spherical or round bar-shaped surface, a member which diffuses and scatters light in a substantially rotationally symmetrical body is located on the rotationally symmetric axis of the lamp. It has a light passage opening provided rotationally symmetrically.
As with the last-mentioned feature of the present invention, according to another configuration of the present invention, an elongated illumination means having a cylindrical surface diffuses and scatters light in a substantially tank-like or basin-like shape. The member has an air passage opening extending symmetrically with respect to the longitudinal center plane of the lamp.
[0014]
The diameter of the air passage opening (for example, in a rotationally symmetric member that diffuses and scatters light) or the width of the air passage opening (for example, in a member that diffuses and scatters light in a substantially tank-like or basin-like shape) is determined by the diffusion of light. And a ratio of about 1: 6 to 1: 7 for the entire diameter or width of the scattering member.
Such an air passage opening, which forms a finger-through opening that facilitates easy handling of members that diffuse and scatter light during assembly or disassembly, has virtually no optics effect. This is because, of course, each air passage opening through which light passes is located behind the front section screen in the illumination means accommodating space. On the other hand, the air passage openings dimensioned to a relatively large area according to the invention provide very effective cooling, especially for high-power high-voltage or low-voltage halogen lamps.
[0015]
This cooling, particularly in combination with the aforementioned air passage openings, such as in a synergistic manner, provides in another configuration of the invention an air passage gap between the outer edge of the light diffusing and scattering member and the adjacent reflector surface. Is improved.
In accordance with a preferred embodiment of the present invention, the air passage gap is interrupted by an engagement or mounting point between the light scattering and scattering member and the reflector.
[0016]
【Example】
The drawings show a preferred embodiment of the invention.
The reflective illuminator is generally designated by the reference numeral 10. Here, for example, a ceiling-mounted illuminating lamp inserted into a ceiling notch A of a building ceiling whose ceiling surface is indicated by D is used.
[0017]
The reflective illumination lamp 10 includes a reflective mirror 12 having a rotationally symmetric reflective mirror 11. This reflector 12 forms in the rear area of its internal space 20 an illumination means accommodation space 13 for an illumination means 14 which can be, for example, a high-voltage or low-voltage halogen lamp. The front area of the reflector 12 is defined by a reflector front edge 15 extending coplanar with the ceiling surface D. The front edge 15 of the reflecting mirror defines a light exit surface E.
[0018]
A shielding space R is recognized outside the reflecting mirror 12. The shielding space R is formed by a free side S having a shielding angle α that rotates around the rotation axis y. The shielding angle α is formed between the free side S and the outwardly extending portion 17 of the flat light exit surface E. In the embodiment shown, this extension 17 has the same meaning as the ceiling surface D.
[0019]
The extension S1 of the free side S having the shielding angle α extends into the internal space 20 of the reflecting mirror 12, and crosses each other at an intersection K. Given that the free side extensions S1 rotate about the rotation axis y, these free side extensions S1 form the surface of the cone 19 above the intersection K. This conical surface simultaneously forms the front section screen 19 of the illumination means accommodation space 13. The reflecting mirror 11 is formed so that the light exiting from the illumination means accommodating space 13 is reflected invisibly in the shielding space R.
[0020]
Displaced slightly behind the front section screen 19 towards the illumination means 14 is a separate flat member 18 having a conical surface and diffusing and scattering light. The flat member 18 is detachably mounted, for example constrained, to the reflector 11 along a small number of locations 21 or along the perimeter in a manner not shown.
[0021]
The flat member 18 comprises a member of a light-transparent milky (and thus generally milky glass-like) material, for example injection molded from plastic. The flat member 18 has an air passage opening 22 which serves for air circulation to cool the lighting means 14 and also serves as a light passage opening.
[0022]
The illuminating means 14 effectively forms a secondary light source, the conical surface of the flat member 18 facing the flat light exit surface E forming an illuminating surface 16 which serves as a primary illuminating means. In view of the high brightness of the illumination means 14 having a discontinuous surface, it is also conceivable for the flat member 18 to have a homogenizing effect and a symmetrizing effect.
[0023]
The dashed line F marked on the left in the drawing shows the curve of the reflector forming the wall-hanging element according to DE-A-2 336 418, and the device shown may be a wall-mounted reflector. It is shown that.
[0024]
According to the drawing, it is also conceivable for the reflecting mirror 12 to be an elongate tubular member which extends symmetrically with respect to the longitudinal center plane M into the plane of the drawing. In this case, the illumination means 14 also has a cylindrical shape, for example, a cylindrical shape.
[0025]
The flat member 18 which diffuses and scatters the light shown in FIG. 2 forms a frustoconical hollow body whose narrow area is directed downwards towards the light exit surface E, the small circular surface of which is the air. A passage opening 23 is formed. This air passage opening 23 has a diameter of DL = 20 mm in a specific embodiment, and the overall diameter DG of the member 18 is about 130 mm. Therefore, the ratio of DL to DG is about 1: 6.5 (see FIG. 3).
[0026]
As can be clearly seen from FIG. 3, the member 18 is detachably connected to the reflector 12 at an engagement or mounting point 21. To this end, the reflector 12 has a rectangular slit-like engaging opening 24 extending over a small part of the circumference, which cooperates with an engaging pin 25 which has a rectangular cross section and is short in the radial direction. Member 18 has diametrically opposed engaging projections 26 on its outer edge 27 which cooperate to snap-engage the relatively tightly curved concave reflector 11.
[0027]
The member 18 may be made of an elastic material having a specific elastic return force. The member 18 is a plastic injection-molded part made of polycarbonate, and is a flat member that is translucent and transmits light, but diffuses and scatters milky light by a special pigment.
[0028]
The rectangular engagement opening 24, together with the rectangular cross-section engagement pin 25, ensures an oblique radial mounting position of the member 18 with only two engagement or mounting points 21.
[0029]
As can be seen from FIG. 2, the air passage opening 23 in the lighting means accommodating space 13 enables air circulation for effective cooling. The presence of the surrounding air passage gap 28 between the outer edge 27 of the member 18 and the adjacent reflector 11 further improves the circulation of air. If the flat member which diffuses and scatters the light in the elongated illumination means is tank-shaped or tray-shaped, each air passage gap extends linearly parallel to the adjacent reflecting mirror surface. Each air passage gap 28 is interrupted only by the engagement or mounting point 21 between the reflector 18 and the light diffusing and scattering member 18.
[0030]
As can be seen from FIG. 3, the air passage opening 23 simultaneously forms a finger through opening, by means of which the member 18 can be easily pulled down and the member 18 can be removed from the mounting position on the reflector 12. By pushing the upwardly concave concave center of the resilient member 18 into the mounting position, the mounting of the member 18 is similarly simplified in the reverse manner.
[Brief description of the drawings]
FIG. 1 is a schematic vertical sectional view of a reflective illumination lamp according to the present invention.
FIG. 2 is a vertical sectional view of an embodiment different from FIG.
FIG. 3 is an enlarged vertical sectional view of the reflection type lighting according to FIG. 2;
4 is a plan view of a member that diffuses and scatters light as viewed in the direction of arrow IV in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Reflection type illumination light 11 Reflecting mirror surface 12 Reflecting mirror 13 Illuminating means accommodation space 14 Illuminating means 15 Reflecting mirror front edge 16 Irradiation surface 17, S1 extension part 18 Member which diffuses and scatters light 19 Front section screen α Shielding angle E Light exit plane M Vertical center plane R Shielding space S Free side y Rotation axis

Claims (15)

A reflecting mirror (12) having at least one rotationally symmetric or cylindrical reflecting mirror surface (11) divides its internal space (20) into a front reflecting mirror area and a rear reflecting mirror area, and the rear reflecting mirror area is At least one form of illumination means housing space for lighting means (14) (13) is partitioned by the reflecting mirror front edge the front reflection Kagamihan circumference surrounds a flat light exit plane (E) (15), illumination means (14) at least one irradiation surface (16) is included with, the light is emitted from the irradiated surface (16) to the reflector surface (11), the reflector (12) shielding angle be external (alpha) in the free side (S) and the shielded space having a cross section which is defined extensions facing outwards and (17) by a flat light exit plane (E) (R), the light is not visible, the reflecting mirror (12 ) Inclining with respect to the rotation axis edge (y) or the longitudinal center plane (M) and into the reflecting mirror (12). Opposing free edges of the beauty Ru shielding蔽角(alpha) reflector (S) extensions intersect each other in the (12) (S1) is the front-gu screen lighting means housing space (13) (19) Wherein the illumination means (14) forms a secondary light source and is illuminated at a distance from the illumination means (14) in front of this secondary light source in the direction towards the light exit surface (E). A flat member (18) for diffusing and scattering light is provided on the front section screen (19) of the means accommodation space (13) or between the front section screen (19) and the lighting means (14). provided al is, the flat member (18) is, as the primary light source, characterized in that it the light to form an irradiation surface that radiation (16) towards the reflecting surface (11), at least one rotationally symmetrical Or, a reflective illumination lamp provided with a reflecting mirror having a cylindrical reflecting mirror surface. 2. The reflective illuminating lamp according to claim 1, wherein the member (18) for diffusing and scattering light has a lattice-shaped light passage opening (22). The reflective illuminating lamp according to claim 2, wherein the member having a lattice-shaped light passage opening and diffusing and scattering light is formed of an opaque material. 4. The reflective illuminating lamp according to claim 3, wherein the member that diffuses and scatters light is made of a wire mesh. 3. The reflective illumination lamp according to claim 1, wherein the member that diffuses and scatters light is made of a translucent milky glass-like material. 6. The reflective illuminating lamp according to claim 1, wherein the member that diffuses and scatters the light includes individual elements that form a light passage gap therebetween. 7. Reflective illuminating lamp according to claim 1, wherein in the case of the small illuminating means (14), the element (18) for diffusing and scattering light is substantially rotationally symmetric. The reflective illuminating lamp according to claim 7, wherein the rotationally symmetric body is formed in a tapered, conical or truncated conical shape. 7. An elongated illuminating means having a cylindrical surface, characterized in that the member which diffuses and scatters light is a substantially closed tank or basin closed at the front. Reflective lighting. Reflective illuminator according to one of the preceding claims, characterized in that the element (18) for diffusing and scattering light has an air passage opening (23) which is useful for the assembly operation. In the case of the small illuminating means (14) , a member (18) which is substantially rotationally symmetrical and diffuses and scatters light is provided rotationally symmetrically with respect to the rotationally symmetric axis (y) of the illuminating lamp (10). Reflective illuminator according to claim 10, characterized in that it has an air passage opening (23). In the elongated illuminating means having a cylindrical configuration, a member which substantially forms a trough or basin and diffuses and scatters light extends symmetrically with respect to the longitudinal center plane (M) of the illuminating lamp (10). Reflective illuminator according to claim 10, characterized in that it has an air passage opening (23). Reflective illuminator according to one of claims 10 to 12, characterized in that each air passage opening (23) forms a finger passage opening. 14. An air gap (28) is formed between an outer edge (27) of a member (18) for diffusing and scattering light and an adjacent reflecting mirror surface (11). The reflective illumination lamp according to one of the above. The air passage gap (28) is interrupted only at the point of engagement or attachment between the light diffusing and scattering member (18) and the reflector (12). 15. The reflective illumination lamp according to 14.

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